Package Management

How to Use snapper for Snapshot Management on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Use snapper for Snapshot Management on RHEL 10

Introduction How to Use snapper for Snapshot Management on RHEL 10 on RHEL 10 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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How to Set Up Port Knocking on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up Port Knocking on SLES 16

Introduction This tutorial covers How to Set Up Port Knocking on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper […]

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How to Configure TeamCity Build Agent on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Configure TeamCity Build Agent on SLES 16

Introduction This tutorial covers How to Configure TeamCity Build Agent on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper […]

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Debian 13 — vim-syntastic — vulnerability — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — vim-syntastic — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 November 2025 Affected versions: Debian 13 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-11319 Upstream summary: Syntastic (aka vim-syntastic) through 3.9.0 does not properly handle searches for configuration files (it searches the current directory up to potentially the root). This improper handling […]

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How to Set Up Consul on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up Consul on SLES 16

Introduction This tutorial covers How to Set Up Consul on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

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Debian 13 — ruby-secure-headers — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 13

Debian 13 — ruby-secure-headers — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 12 November 2025 Affected versions: Debian 13 (trixie) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2020-5216 CVE-2020-5217 Upstream summary: In Secure Headers (RubyGem secure_headers), a directive injection vulnerability is present in versions before 3.9.0, 5.2.0, and 6.3.0. If user-supplied input was passed into […]

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How to Set Up Terraform on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Set Up Terraform on SLES 16

Introduction This tutorial covers How to Set Up Terraform on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

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How to Install pgAdmin 4 on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install pgAdmin 4 on RHEL 9

pgAdmin 4 is the official, full-featured web-based administration and development platform for PostgreSQL. It provides a graphical interface for managing databases, schemas, tables, views, functions, roles, and server connections; a SQL query editor with syntax highlighting and query execution plans; a visual schema designer; backup and restore wizards; and monitoring dashboards for server statistics. pgAdmin […]

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How to Install Nexus Repository on SLES 16 — step-by-step SUSE Linux Enterprise 16 tutorial on Progressive Robot

How to Install Nexus Repository on SLES 16

Introduction This tutorial covers How to Install Nexus Repository on SLES 16 on SLES 16. SLES 16 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 16 system is up to date: zypper refresh […]

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Common Problems 116626

Ubuntu 24.04 LTS – NFS stale file handle errors on mounted share – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 12 November 2025 Affected versions: Ubuntu 24.04 LTS 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors […]

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